Question 1

Which of the following statements is a hypothesis?

Accepted Answer

If I add air to the bicycle tire, it will expand to the proper size.

Question 2

A student observes that a big log in the fire does not burn well. She then chops the log into smaller pieces and notices that the small pieces burn brighter and make a hotter fire. What type of scientific process is the act of chopping the log and burning the pieces?

Accepted Answer

Experiment

Question 3

Which of the following is a conclusion based on the provided scenarios?

Accepted Answer

The small wood pieces are used up faster than burning the big log.

Question 4

Solve for $$x in $$the equation $$2x + 5 = 41.$$

Accepted Answer

$$x = 18$$

Question 5

Given the equation $$\frac{5x}{3} = 40$$, what is the value of $$x$$?

Accepted Answer

$$x = 24$$

Question 6

Solve for $$z in $$the equation $$3z - (-6) = 12.$$

Accepted Answer

$$z = 2$$

Question 7

If $$\frac{4z}{-12} = -8$$, what is the value of $$z$$?

Accepted Answer

$$z = 24$$

Question 8

A scientist observes that a chemical reaction produces a color change. She proposes that the color change is due to the formation of a new compound. She then tests this by isolating the product and analyzing it. What is the scientist's proposal classified as?

Accepted Answer

Hypothesis

Question 9

Which of the following best describes an experiment in the context of the scientific method?

Accepted Answer

Testing a hypothesis by performing a procedure and collecting data.

Question 10

A patient reports that their medication is not working as expected. The doctor hypothesizes that the patient is not absorbing the drug properly. The doctor then orders a blood test to check drug levels. What is the blood test classified as?

Accepted Answer

Experiment

Question 11

A student records that after adding air to a flat tire, the tire remains flat. What type of scientific process is this?

Accepted Answer

Experiment

Question 12

Which of the following is an example of an observation?

Accepted Answer

The bicycle tire is flat.

Question 13

A researcher finds that the small wood pieces are used up faster than burning the big log. What type of scientific process is this?

Accepted Answer

Conclusion

Question 14

Which of the following best represents the correct order of steps in the scientific method as illustrated by the bicycle tire scenario?

Accepted Answer

Observation → Hypothesis → Experiment → Conclusion

Question 15

A fireman notices that a large log does not burn well, hypothesizes that smaller pieces will burn better, tests this by burning small pieces, and observes a hotter fire. What is the final step if he states, 'The small wood pieces are used up faster than burning the big log'?

Accepted Answer

Conclusion

Question 16

A student solves the equation $$2x + 5 = 41$$ and gets $$x = 18. $$Which of the following steps is correct in solving this equation?

Accepted Answer

Subtract 5 from both sides, then divide by 2.

Question 17

If $$3z - (-6) = 12$$, what is the first step to isolate $$z$$?

Accepted Answer

Subtract 6 from both sides, but since it is $$-(-6)$$, add 6 to both sides, then divide by 3.

Scientific Method and Basic Algebra in GOB Chemistry

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